Question & Answer
Question
I am using the MIXED procedure (Analyze->Mixed Models->Linear) in IBM SPSS Statistics. I have a time factor with 4 levels and would like to test polynomial contrasts involving that factor. I do not see a Contrast option in the Linear Mixed Models dialog or the MIXED command syntax chart. How would I request linear, quadratic, and cubic contrasts, for example, in MIXED?
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Modified date:
16 April 2020
UID
swg21622252